Dongguan Zhenglong Intelligent Equipment Technology Co., Ltd. specializes in the research and development of machinery and equipment; sales of furnaces, melting furnaces, and electric furnaces; sales of experimental and analytical instruments; sales of instruments and meters; repair of instruments and meters; equipment repair; sales of machinery and equipment; sales of office equipment; technical services, technical development, technical consultation, technical exchange, technology transfer, and technology promotion; sales of electrical equipment; sales of office supplies; mold manufacturing; sales of labor protection products; material sales; refractory material sales; new material technology promotion services; metal sales; new ceramic material sales; non-ferrous metal alloy sales; special ceramic product sales; lime and gypsum sales; retail of hardware products; sales of electronic products; sales of decorative materials; graphic design and production; design services; import and export of goods; import and export of technology; manufacturing of metal processing machinery; manufacturing of metal cutting and welding equipment; manufacturing of metal household goods; metal surface treatment and heat treatment processing; manufacturing of metal chains and other metal products; manufacturing of non-ferrous metal alloys.